1.Bluetooth specification: version 1.2 2.Bluetooth profile supported: headset and handfree profiles 3 Works with all major Bluetooth mobile phones 4.Rang of frequency: 2.4GHZ spectrum 5.Broadcast range up to 10M 6.Volumn control and mute button 7.Power button (answer/end calls) 8.Built-in rechargeable Lithium polymer battery 9.Can speak up to 6 hours 10.Up to 100 hours of standing time 11.Power adapter 12.Working condition: Temperature: Operation/storage: --15°C to 55°C, charge 0°C to 45°C
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